November, 2005
Yao Zhonghui, HuaweiSlide 1
doc.: IEEE 802.11-05/1168r0
Submission
802.11u Proposal
Name Company Address Phone email Zhonghui Yao Liangyao Mo
Huawei Longgang Production Base, Shenzhen 518129 P.R.China
+86-755-89650528
[email protected] [email protected]
Jim Carlo 214-693-1776 [email protected]
Linda Dunbar 972 543 5849 [email protected]
Bob Sultan
Huawei
1700 Alma Drive, Suite 100 Plano, TX 75025 914 276 0375 [email protected]
Vivek Gupta Intel
Feng Li ZTE
Authors:
Notice: This document has been prepared to assist IEEE 802.11. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein.
Release: The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802.11.
Patent Policy and Procedures: The contributor is familiar with the IEEE 802 Patent Policy and Procedures <http:// ieee802.org/guides/bylaws/sb-bylaws.pdf>, including the statement "IEEE standards may include the known use of patent(s), including patent applications, provided the IEEE receives assurance from the patent holder or applicant with respect to patents essential for compliance with both mandatory and optional portions of the standard." Early disclosure to the Working Group of patent information that might be relevant to the standard is essential to reduce the possibility for delays in the development process and increase the likelihood that the draft publication will be approved for publication. Please notify the Chair <[email protected]> as early as possible, in written or electronic form, if patented technology (or technology under patent application) might be incorporated into a draft standard being developed within the IEEE 802.11 Working Group. If you have questions, contact the IEEE Patent Committee Administrator at <[email protected]>.
November, 2005
Yao Zhonghui, HuaweiSlide 2
doc.: IEEE 802.11-05/1168r0
Submission
Purpose
This presentation expresses our understanding of the 802.11u requirements and proposes solutions to fulfill some of the requirements.
November, 2005
Yao Zhonghui, HuaweiSlide 3
doc.: IEEE 802.11-05/1168r0
Submission
Outline
• Basic Issues associated with Inter-working• Proposal for 802.11u Architecture
• Proposal for Network Selection
• Proposal for 802.21 MIH Requirements
November, 2005
Yao Zhonghui, HuaweiSlide 4
doc.: IEEE 802.11-05/1168r0
Submission
Inter-working Issues in 802.11u
External NetworkInformation
InterworkingCapability
Network Selection
Network Sharing
STA Sharing
Security and Protection
Battery Consumption
November, 2005
Yao Zhonghui, HuaweiSlide 5
doc.: IEEE 802.11-05/1168r0
Submission
Network Selection
• Network Selection is about:– Is this network my home network? If no, does it have the
capability of inter-working?– R3N2: select the correct credentials when authenticating with a
Local Network.
• Network Selection is based on – External Network Information– Local Network Information
• Inter-working capability• R3E4: Functionality shall be provided by which APs can advertise
(before connection) the charges that will be made for use of the network if a user enrolls with it.
November, 2005
Yao Zhonghui, HuaweiSlide 6
doc.: IEEE 802.11-05/1168r0
Submission
Inter-working Capability
• Some examples of Inter-working Capability are:– R3E1: what online enrolment (also called online subscription)
methods are supported by the network.
– R3M4: Emergency Call (e.g. E911) service. Specifically: Capability Advertisement
– MIH Capability (unapproved requirement)
November, 2005
Yao Zhonghui, HuaweiSlide 7
doc.: IEEE 802.11-05/1168r0
Submission
External Network Information
• External Network Information includes those from:– R3N1: Define functionality by which a STA can determine
whether its subscription to an SSPN would allow it to access a particular 802.11AN before actually joining a BSS within that 802.11 AN
– R3N4: Define functionality by which a STA can determine which inter-working services are available before joining a BSS
– R3N5: Functionality shall be provided by which APs can advertise (before connection) the charges that will be made for use of the network if connection is authorized based on an SSPN subscription.
– MIH related information (unapproved requirements)
November, 2005
Yao Zhonghui, HuaweiSlide 8
doc.: IEEE 802.11-05/1168r0
Submission
Outline
• Basic Issues associated with Inter-working
• Proposal for 802.11u Architecture
• Proposal for Network Selection
• Proposal for 802.21 MIH Requirements
November, 2005
Yao Zhonghui, HuaweiSlide 9
doc.: IEEE 802.11-05/1168r0
Submission
802.11 Components
DS
BSS1
BSS2
STA 1
STA 2
STA 4
STA3PortalAP
AP
802.x LAN
ESS
802.11 defines an integration service that supports MSDU delivery between BSS and integrated LAN.
Portal is defined as the logical point at which the integration service is provided.
November, 2005
Yao Zhonghui, HuaweiSlide 10
doc.: IEEE 802.11-05/1168r0
Submission
802.11u Components Proposal:A new ‘entrance’ entity Introduced
DS
BSS1
BSS2
STA 1
STA 2
STA 4
STA3PortalAP
AP
802.x LAN
External Network
Entrance
We define ‘entrance’ as the logical point at which the inter-working service is provided.An 802.11u network can inter-work with different external networks by only one entrance or related different entrances.
November, 2005
Yao Zhonghui, HuaweiSlide 11
doc.: IEEE 802.11-05/1168r0
Submission
General Model of Inter-working between Network Entities
DSM
AP AP
Entrance Entrance
APAP
STA1 STA3 TOE
AS/proxy
GW
TOE
TOE
ASSSPN
SSPN
November, 2005
Yao Zhonghui, HuaweiSlide 12
doc.: IEEE 802.11-05/1168r0
Submission
Entrance Functionality
• Data Delivery– All packets from STA are delivered to the corresponding network of
TOE by entrance;
– All packets to STA are delivered to the corresponding AP by entrance;• Entrance can learn the association relationship from DS
– Data delivery according to the specified constraints (e.g. SSPN authorization information) between AP and entrance;• QoS specified constraints
• Security specified constraints
• 802.11 Services for MIH functionality
November, 2005
Yao Zhonghui, HuaweiSlide 13
doc.: IEEE 802.11-05/1168r0
Submission
Outline
• Basic Issues associated with Inter-working
• Proposal for 802.11u Architecture
• Proposal for Network Selection• Proposal for 802.21 MIH Requirements
November, 2005
Yao Zhonghui, HuaweiSlide 14
doc.: IEEE 802.11-05/1168r0
Submission
Network Selection in 802.11
• Network Selection should be based on Inter-working Capability and related external network information.
November, 2005
Yao Zhonghui, HuaweiSlide 15
doc.: IEEE 802.11-05/1168r0
Submission
Local Network Information
• Network Owner Identifier• Inter-working Capability Information
– Interworking Capability Bit• Supports inter-working or not
– MIH Bit• MIH enabled or not
– Emergency call Bit• Emergency call enabled or not
– Virtual STA bit• Virtual STA access support or not
– ……
• Online enrollment methods– e.g. UAM
November, 2005
Yao Zhonghui, HuaweiSlide 16
doc.: IEEE 802.11-05/1168r0
Submission
External Network Information• External Network Identifier• Inter-working Type
– Intranet– Internet– 3GPP
• 3GPP scenarios 1 == Internet• 3GPP scenarios 2• 3GPP Scenarios 3• ……
– 3GPP2– UMA
• Other related information– MIH network information– Charge information– Roaming related information, etc.
November, 2005
Yao Zhonghui, HuaweiSlide 17
doc.: IEEE 802.11-05/1168r0
Submission
Network Selection Routine
APSTA
Beacon (Message 1: Interworking Capability Information)
Probe request (Message 2: Network Discovery Request)
Probe response (Message 3: Network Discovery Response)
Begin to SCAN
Join a selected BSS
entrance
External Network Information Request
External Network Information Response
November, 2005
Yao Zhonghui, HuaweiSlide 18
doc.: IEEE 802.11-05/1168r0
Submission
Outline
• Basic Issues associated with Inter-working
• Proposal to 802.11u Architecture
• Proposal to Network Selection
• Proposal to 802.21 MIH Requirements
November, 2005
Yao Zhonghui, HuaweiSlide 19
doc.: IEEE 802.11-05/1168r0
Submission
MIH Architecture for 802.11
New items in scope of 802.21
SMEor
NME
LLC
MAC
PHY
PHY_SAP
MAC_SAPMLME
PLME
MLME_PLME_SAP
MLM
E_S
AP
PLM
E_S
AP
LSAP
Layer 3 or higher Mobility Protocol (L3MP)
MIH
_SM
E_S
AP
802.21 ScopeMIH_L3MP_SAP
MIH_LINK_SAP
MIH FunctionMIH Event ServiceMIH Command ServiceMIH Information Service
November, 2005
Yao Zhonghui, HuaweiSlide 20
doc.: IEEE 802.11-05/1168r0
Submission
No Event Type Event Name Description
1 State Change Link Up L2 Connection established
2 State Change Link Down L2 Connection is broken
3 Predictive Link Going Down L2 connection breakdown imminent
4 State Change Link Detected New L2 link has been found
5 State Change Link Parameters Change Change in specific link parameters has crossed pre-specified thresholds (link Speed/Qos/ Quality metrics)
6 Administrative Link Event Rollback Event rollback
7 Link Transmission Link SDU Transmit Success Improve handover performance through local feedback as opposed to waiting for end-to-end notifications
8 Link Transmission Link SDU Transmit Failure Error in transmitting SDU corresponding to a specific PDU
9 Link Synchronous Link Handover Imminent L2 intra-technology handover imminent (subnet change). Notify Handover information without change in link state)
10 Link Synchronous Link Handover Complete Notify handover state
Proposed Link Layer Events
November, 2005
Yao Zhonghui, HuaweiSlide 21
doc.: IEEE 802.11-05/1168r0
Submission
Information Element Name
Description Media Types
Comments
Inter Technology Neighbor ReportsList of networks available List all network types that are
available given a location or POA information
All E.g., 802.3, 802.11, 802.16, GSM, GPRS/EDGE networks
Location of PoA Geographical Location, Civic address, PoA ID
All E.g. GML formatfor LBS or network management purpose
Operator Name of the network provider All E.g. Vodafone, Orange. Could be equivalent to Network ID.
IP Version Indicates the version Internet Protocol used
All IPv4 and/or IPv6
Roaming Partners List of direct roaming agreements E.g. in form of NAIs or MCC+MNC
Cost Indication of costs for service/network usage
All E.g, Free/Not free or (flat rate, hourly, day or weekly rate)
Security Link layer security supported All Technology specific, e.g. WEP in 802.11, 802.11i, PKM in 802.16, etc.
Quality of Service Link QoS parameters All E.g. QoS Classes, Traffic specifications
Information Elements 1 of 2Media Independent Neighbor Reports
November, 2005
Yao Zhonghui, HuaweiSlide 22
doc.: IEEE 802.11-05/1168r0
Submission
Name of Information Element Description Comments
Higher Layer Services Supported
IMS Access (MMS, SMS, Presence, Instant Message, Push-to-Talk, …)
Indication whether specific service is supported or not
802.21 specific methods, e.g., a new flag, query/response
ISP Supported Internet Service Provider that provides the access to internet
Location based services List of Local services that are available given a location
VPN Supported Network enables VPN services
MIP Supported Network enables MIP version and services
Use of NAT NAT is used for internet access
Information Elements 2 of 2Higher Layer Services Information (HLSI)
November, 2005
Yao Zhonghui, HuaweiSlide 23
doc.: IEEE 802.11-05/1168r0
Submission
Summary
• Basic Issues – Network Selection, Network sharing, STA sharing, etc.
• Proposal for 802.11u Architecture– ‘Entrance’ Entity, External network information service, Delivery
service with the specified constraints
• Proposal for Network Selection– Network selection based on inter-working capability and external
network information.
• Proposal for 802.21 MIH Requirements
November, 2005
Yao Zhonghui, HuaweiSlide 24
doc.: IEEE 802.11-05/1168r0
Submission
References
• 11-05-0840-04-000u-802.11u-proposal• 11-05-1006-00-000u-initial-network-selection-consept• 11-05-0898-01-000u-service-access-contexts• 11-05-0971-00-000u-redefining-ssid• 11-05-0822-03-000u-tgu-requirements• 11-05-0279-15-000u-suggested-tgu-functional-
requirements• 11-05-0333-05-000u-terms-and-definitions• 11-05-0355-04-000u-draft-scope-scenarios-and-
assumptions